User interface for a computer display



FIG. 1 is a front view of a user interface for a computer display showing a first embodiment of our new design; and,

FIG. 2 is a front view of a user interface for a computer display showing a second embodiment of our new design.

The broken lines showing of a computer display is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a user interface for a computer display, as shown and described. 